Last-minute issues found with these images:

CD#1 contains extra files that should have been deleted, but were
missed when releasing 3.1r3

This causes two problems:

The kernel installed using these images will, in some cases,
not be the latest kernel on the CD, but rather the previous
version. Update the kernel specifically after installation and all
should be fine.

As the extra files on CD#1 take up extra space, some of the normal
installation tasks will no longer fit there. If you want to install
all the tasks from CD only, you will need to use CD#2 as well.

Apologies for any hassle this may cause; we expect to fix this
issue for r4. DVD images and network installs should not be
affected.